Greenpeace activists have scaled a building outside the Foreign Office in protest over delays to signing an international treaty protecting oceans.Four protesters unfurled a banner as they suspended themselves on columns on the King Charles Street Archway in Westminster early on Thursday morning.The group called for faster action from Foreign Secretary David Lammy in signing the Global Ocean Treaty, with the banner showing a turtle with the words "Lammy don't dally!".

Greenpeace activists have scaled a building outside the Foreign Office in protest over delays to signing an international treaty protecting oceans.Four protesters unfurled a banner as they suspended themselves on columns on the King Charles Street Archway in Westminster early on Thursday morning.The group called for faster action from Foreign Secretary David Lammy in signing the Global Ocean Treaty, with the banner showing a turtle with the words "Lammy don't dally!".